Lowrance LMS-350A, Инструкция по установке и эксплуатации

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15
SENSITIVITY
The sensitivity key on the LMS-350A controls the ability of the unit to pick
up echoes. A low sensitivity level excludes much of the bottom informa-
tion, fish signals, and other target information. High sensitivity levels
enables you to see this detail, but it can also clutter the screen with many
undesired signals. Typically, the best sensitivity level shows a good solid
bottom signal with Grayline and some surface clutter.
When the LMS-350A is in the Automatic mode, the sensitivity is automati-
cally adjusted to keep a solid bottom signal displayed, plus a little more.
This gives it the capability to show fish and other detail.
However, situations occur where it becomes necessary to increase or
decrease the sensitivity. This typically happens when you wish to see
more detail, so an increase in sensitivity is indicated. The procedure to
adjust it is the same whether the unit is in the automatic or manual mode.
To adjust the sensitivity, press the SENS key. The sensitivity adjust menu
appears on the right side of the screen.
The sensitivity menu has left and right arrows, plus a horizontal bar graph.
The graph gives a visual indication of the sensitivity level. The number
above the arrows also shows the percentage of sensitivity in use.
To increase the sensitivity level,
press the right arrow key. As
you press the key, the menu’s
bar graph will grow wider and
the percentage will increase in
value. You can also see the
difference on the chart record
as it scrolls. When the sensitiv-
ity is at the desired level, re-
lease the key.
To decrease the sensitivity
level, press the key adjacent to
the left arrow. The bar graph and percentage will decrease. When the
sensitivity is at the desired level, release the key.
When you reach either the maximum or minimum limit, a tone sounds.
To turn the menus off, press the CLR key or wait a few seconds and the
menus will automatically disappear.